🧂 High-Sodium Dairy & Eggs — Kidney Stone Risk Guide

When you eat too much sodium, your kidneys excrete more calcium — and calcium in urine is a key ingredient in kidney stones. Here are 3 Dairy & Eggs foods with elevated sodium levels that kidney stone patients should track.

📊 3 foods

✓ Lab-Verified Data Oxalate values from Harvard T.H. Chan SPH Oxalate Database (2024), measured via ion chromatography. This site is a dietary reference tool, not a medical resource.

Dairy and eggs form the safest corner of the database: nearly every item measures under 5 mg of oxalate, and most are at zero. Dairy also delivers the two things a stone diet needs most — calcium that binds oxalate in the gut, and fluid volume. The calcium-in-food (not calcium-supplement) message from the NKF and AUA is exactly why this category is foundational: milk, yogurt, and cheese protect against stones while being effectively oxalate-free. For stone patients, this is the category to build meals around rather than restrict.

Sodium is the hidden dial in stone prevention: excess sodium makes the kidneys excrete more calcium, and urinary calcium is a primary stone ingredient. The general target is under 2,300 mg of sodium per day, and processed and packaged foods are where sodium hides — not the saltshaker. For stone patients who also track oxalate, the two columns interact: a food can be low in oxalate but risky through sodium, which is why the full picture matters rather than a single nutrient.

Among the 3 dairy & eggs foods shown here, the list is ranked by oxalate per serving so the safest options are immediately visible — scan the top of the grid for daily staples and treat the lower entries as portion foods.

Majority safe: 3/3 foods (100%) are in the safe range. The odds are in your favor with this intersection.

Average sodium: 959 mg/100g across 3 foods. The general recommendation is under 2,300 mg/day total. These foods can add up quickly.

Average oxalate: 0 mg/serving across all 3 foods. Check individual food pages for precise numbers per serving size.

Data source: All oxalate values from Harvard T.H. Chan SPH (2024) via OHF. Nutrition data from USDA FoodData Central where available.

🍽️ Foods in This Category

❓ Frequently Asked Questions

Why does sodium matter for kidney stones?

High sodium intake increases calcium in urine — a direct risk factor for calcium oxalate stones. The general recommendation is under 2,300 mg sodium per day.

How do I reduce sodium in these foods?

Choose low-sodium or no-salt-added versions when available. Avoid adding table salt during cooking or at the table. Rinse canned foods to remove excess sodium.

What's a safe sodium target?

For kidney stone patients, aiming for under 2,000 mg/day is reasonable. The NKF recommends under 2,300 mg. Check individual food pages for sodium per serving.

This is dietary reference information, NOT medical advice. Talk to your doctor or a registered dietitian before changing your diet. Oxalate tolerance varies by person, stone type, and medication.